What is the solution to the following system of equations? 2x+7y=14 and x+y=1

Answer 1

solve for y in second equation: y = 1-x, and substitute 1-x for y in first equation:

2x + 7(1-x) = 14

2x + 7 - 7x = 14

-5x = 7

x = -7/5

substitute -7/5 for x in equation x + y = 1 to solve for y:

-7/5 + y = 1

y = 12/5